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Germany

Air pressure adviser

Coarse surface finishes
 
Orange peel, color matching problems and mottling.
 
Reason:
 
  • Insufficient atomization pressure
    Cause of problem:
    Compressor too small or too many users; air line diameters too small.
    Remedies:
    - Replace compressor
    - Reduce number of users
    - Install larger compensation container for bigger reserve
  • Too many leaks in the air line
    Cause of problem:
    Worn-out compressed air lines and hoses, etc.
    Remedies:
    - Repair leaks
    - Disconnect leaking users
    - Replace defective pipes
  • Air flow of follow-up devices such as refrigerant dryer or filter is too low
    Cause of problem:
    Wrong calculation of performance data; wrong consumption data
    Remedies:
    - Adapt performance data of follow-up devices to compressor or user
  • Compressed air line diameter too small; air line too long
    Cause of problem:
    Compressed air line has wrong dimensions
    Remedies:
    - Replace compressed air line; increase diameter
    Formula: The greater the length of a compressed air line, the larger its diameter must be.
  • Diameter of compressed air hose too small
    Cause of problem:
    Wrong choice of hose diameter; too many hose pieces coupled together; too many diameter reductions
    Remedies:
    - Use compressed air hoses with a minimum diameter of 9 mm
    - No coupling of hoses together; always use a hose having the correct length.
  • Diameter of compressed air couplings or hose fittings too small
    Cause of problem:
    Compressed air couplings or hose fittings with too small a diameter lead to a large pressure drop
    Remedies:
    - Use couplings with a free diameter of minimum 5.5 mm
    - Use hose fittings with a minimum diameter of 5.5 mm
  • Air passages for air distribution to the nozzle dirty or clogged
    Cause of problem:
    Insufficient cleaning
    Remedies:
    - Clean gun and check air cap pressure
    - Replace gun
  • Air cap damaged or clogged
    Cause of problem:
    Mechanical damage, insufficient cleaning
    Remedies:
    - Clean air cap
    - Replace air cap, i.e. nozzle set
  • Insufficient gun inlet pressure
    Cause of problem:
    Wrong pressure adjustment at the filter; pressure drop inside the hose; wrong coupling dimensions
    Remedies:
    - Add a pressure regulation valve with gauge on the gun, to allow pressure reading and adjustment
    - Add a pressure gauge, e.g. spray pressure control kit, to the gun inlet
    - Increase pressure at the filter

    
 
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